Ports on the Delaware river below and above Philadelphia, Pa.
By: Prepared by the Board of engineers for rivers and harbors, War department, and Division of research, United States Maritime commission.
Contributors: United States. Maritime Commission.
Series: Port series, no. 30 (revised 1938)
Publisher: U.S. Govt. print. off.
Published: 1939
Place of publication: Washington
Language: eng
Number of pages: 212
Subjects: Harbors -- Delaware River
Notes: At head of title: War department.  Corps of engineers, United States army, and United States Maritime commission ...
"A revision of the data on these ports formerly included in pts. 1 and 2 of Port series no. 4.": p. iii-iv.
"List of reports": p. iii-iv.